PT  - JOURNAL ARTICLE
AU  - Crháková, Kateřina
TI  - 
DP  - 2008 Aug 1
TA  - e-Pedagogium
PG  - 67--72
VI  - 8
IP  - 4
IS  - 12137758
AB  - Mathematical puzzle is a game, which increases speed of counting, improves skills with geometrical shapes and develops cooperation of students in group.